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nikismart Author

Level 1

4 points

iMac 24 2009 just started denying access to my own website

I have an old 2009 iMc 24 that has been running fine other than a new hard drive a few years ago. Just started denying access to my own website, which opens fine on my newer MacBook. The message I get is:

Your connection is not private

Attackers might be trying to steal your information from (my website) (for example, passwords, messages, or credit cards). Learn moreNET::ERR_CERT_DATE_INVALID

My OS is:

System Software Overview:

System Version: OS X 10.11.6 (15G22010)

Kernel Version: Darwin 15.6.0

Is this maybe a compatibility issue?

Any advice is appreciated

Thank you

[Re-Titled by Moderator]

Posted on Oct 16, 2021 4:05 PM

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Level 10

727,199 points

Posted on Oct 16, 2021 4:12 PM

This is caused by an expired system certificate. Switch to Firefox, or choose Utilities from the Finder's Go menu, open the Script Editor, and run:

do shell script "curl -k https://letsencrypt.org/certs/isrgrootx1.der > ~/Downloads/isrgrootx1.der"

Double-click the downloaded certificate.

(206431)

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Level 10

727,199 points

Oct 16, 2021 4:12 PM in response to nikismart

This is caused by an expired system certificate. Switch to Firefox, or choose Utilities from the Finder's Go menu, open the Script Editor, and run:

do shell script "curl -k https://letsencrypt.org/certs/isrgrootx1.der > ~/Downloads/isrgrootx1.der"

Double-click the downloaded certificate.

(206431)

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Level 10

120,686 points

Oct 16, 2021 5:02 PM in response to Niel

Thanks Niel for your tip.

I've got the same issue with my iMac 24" 2009 El Capitan 10.11.6 as well.

It's working now.

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nikismart Author

Level 1

4 points

Oct 16, 2021 6:58 PM in response to Niel

Thanks for the help Niel.

I had a hard time gettign it to work. It still needed to be manually configured to 'Always Trust'.

Its working now!

Thanks again

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Level 9

68,888 points

Oct 16, 2021 7:03 PM in response to nikismart

If you use certs from Let's Encrypt on your site, you may wish to see this KB document they published:

DST Root CA X3 Expiration (September 2021)

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nikismart Author

Level 1

4 points

Oct 16, 2021 11:17 PM in response to Allan Jones

Thanks Allan. That is a great article and explanation of what I am experiencing.

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iMac 24 2009 just started denying access to my own website

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